Paraduodenal Pancreatitis (Groove Pancreatitis) Mimicking Pancreatic Adenocarcinoma

A 58-year-old man was admitted with a 2-month history of severe, sharp epigastric pain radiating to the flank and back, nonbilious emesis, and a 7-kg weight-loss. He had a 20-pack-per-year smoking history as well as significant chronic alcohol abuse. Electrolytes and liver function tests were normal. Contrast-enhanced computed tomography (CT) identified a 6-cm complex pancreatic head mass showing both solid and cystic components with extrinsic...